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llvm / llvm-project / 74c0bdff7da343871303ff985f6a12088a910d7e
commit74c0bdff7da343871303ff985f6a12088a910d7e[log] [tgz]
authorDavid Green <david.green@arm.com>Tue Jul 18 18:52:19 2023 +0100
committerDavid Green <david.green@arm.com>Tue Jul 18 18:52:19 2023 +0100
tree778362a2886e7fe4ff2ad796b0e7717814e55e8f
parentf3dfcc5053ada898f0327ee2371d53be0f71f0a6 [diff]
[AArch64][GISel] Additional FPTrunc vector lowering

I was attempting to add llvm.reduce.fminimum/fmaximum support for GlobalISel.
In the process I noticed that llvm.reduce.fmin/fmax was missing, and could do
with being added first. That led on to adding additional vector support for
minnum/maxnum, which in turn led to needing to handle fptrunc and fpext for
some of the fp16 types. So this patch extends the vector handling for fptrunc,
adding support for f16 types which are clamped to 4 elements, and scalarizing
the rest.

I went round in circles a little with how smaller than legal vectors should be
handled, but this seems simple and seems to work, if not always optimally yet.

Differential Revision: https://reviews.llvm.org/D155311
4 files changed
tree: 778362a2886e7fe4ff2ad796b0e7717814e55e8f
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. libc/
  11. libclc/
  12. libcxx/
  13. libcxxabi/
  14. libunwind/
  15. lld/
  16. lldb/
  17. llvm/
  18. llvm-libgcc/
  19. mlir/
  20. openmp/
  21. polly/
  22. pstl/
  23. runtimes/
  24. third-party/
  25. utils/
  26. .arcconfig
  27. .arclint
  28. .clang-format
  29. .clang-tidy
  30. .git-blame-ignore-revs
  31. .gitignore
  32. .mailmap
  33. CONTRIBUTING.md
  34. LICENSE.TXT
  35. README.md
  36. SECURITY.md
README.md

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